Riding toy dump truck



FIG. 1 is a perspective view of a riding toy dump truck showing my new design;

FIG. 2 is a right elevation thereof;

FIG. 3 is a left elevation thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevation thereof; and,

FIG. 7 is a rear elevation thereof. 

The ornamental design for a riding toy dump truck, as shown. 